<template>
  <el-card class="box-card">
    <div slot="header" class="clearfix">
      <span>更换头像</span>
    </div>
    <div>
      <!-- 图片，用来展示用户选择的头像 -->
      <img :src="avatar" alt="" v-if="avatar" class="preview" />
      <img src="../../../assets/images/avatar.jpg" v-else alt="" class="preview" />

      <!-- 按钮区域 -->
      <div class="btn-box">
        <input type="file" style="display: none" ref="inputRef" @change="changeImg" />
        <el-button type="primary" icon="el-icon-plus" @click="chooseImg">选择图片</el-button>
        <el-button type="success" icon="el-icon-upload" :disabled="avatar == ''" @click="uploadAvatar">上传头像</el-button>
      </div>
    </div>
  </el-card>
</template>

<script>
export default {
  name: "UserAvatar",
  data() {
    return {
      avatar: "",
    };
  },
  methods: {
    chooseImg() {
      this.$refs.inputRef.click();
    },
    changeImg(e) {
      // console.log(e.target.files);
      const files = e.target.files;
      if (files.length == 0) {
        this.avatar = "";
      } else {
        const fr = new FileReader();
        fr.readAsDataURL(files[0]);
        fr.onload = (e) => {
          this.avatar = e.target.result;
        };
      }
    },
    async uploadAvatar() {
      const { data: res } = await this.$http.patch("/my/update/avatar", {
        avatar: this.avatar,
      });
      if (res.code != 0) return this.$message.error('上传头像失败')
      this.$message.success('上传头像成功')
      //   console.log(res);
      this.$store.dispatch("getUserInfo");
    },
  },
};
</script>

<style lang="less" scoped>
.btn-box {
  margin-top: 10px;
}

.preview {
  object-fit: cover;
  width: 350px;
  height: 350px;
}
</style>
